Mitsubishi Electric FR-E700EX Instruction Manual page 33

Control circuit specifications
When using an external power supply for transistor output
 Sink logic type
Use terminal PC as a common terminal, and perform
wiring as shown below. (Do not connect terminal SD of the
drive unit with terminal 0V of the external power supply.
When using terminals PC-SD as a 24VDC power supply,
do not install an external power supply in parallel with the
drive unit. Doing so may cause a malfunction in the drive
unit due to undesirable currents.)
QY40P type transistor
output unit
TB1
TB2
TB17
Constant
voltage
circuit
TB18
22
Drive unit
STF
24VDC
(SD)
STR
PC
24VDC SD
Current flow
 Source logic type
Use terminal SD as a common terminal, and perform
wiring as shown below. (Do not connect terminal PC of the
drive unit with terminal +24V of the external power supply.
When using terminals PC-SD as a 24VDC power supply,
do not install an external power supply in parallel with the
drive unit. Doing so may cause a malfunction in the drive
unit due to undesirable currents.)
QY80 type transistor
output unit
Constant
voltage
Fuse
circuit
Drive unit
PC
TB1 STF
24VDC
(SD)
TB2
STR
TB17
TB18 SD
Current flow